linux-kernel - [PATCH] staging: media: atomisp: Use kvfree

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Wed,  9 Sep 2020 20:53:50 +0100
From:   Alex Dewar <alex.dewar90@...il.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Alex Dewar <alex.dewar90@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] staging: media: atomisp: Use kvfree_sensitive in a few places

In the file pci/sh_css_params.c, there are a number of places where
memset+kvfree is used, where kvfree_sensitive could be used instead. Fix
these occurrences.

Issue identified with Coccinelle.

Signed-off-by: Alex Dewar <alex.dewar90@...il.com>
---
 .../staging/media/atomisp/pci/sh_css_params.c | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/sh_css_params.c b/drivers/staging/media/atomisp/pci/sh_css_params.c
index 2c67c23b3700..d1b5d6608d52 100644
--- a/drivers/staging/media/atomisp/pci/sh_css_params.c
+++ b/drivers/staging/media/atomisp/pci/sh_css_params.c
@@ -4378,8 +4378,7 @@ ia_css_3a_statistics_free(struct ia_css_3a_statistics *me)
 	if (me) {
 		kvfree(me->rgby_data);
 		kvfree(me->data);
-		memset(me, 0, sizeof(struct ia_css_3a_statistics));
-		kvfree(me);
+		kvfree_sensitive(me, sizeof(struct ia_css_3a_statistics));
 	}
 }
 
@@ -4417,8 +4416,7 @@ ia_css_dvs_statistics_free(struct ia_css_dvs_statistics *me)
 	if (me) {
 		kvfree(me->hor_proj);
 		kvfree(me->ver_proj);
-		memset(me, 0, sizeof(struct ia_css_dvs_statistics));
-		kvfree(me);
+		kvfree_sensitive(me, sizeof(struct ia_css_dvs_statistics));
 	}
 }
 
@@ -4459,8 +4457,7 @@ ia_css_dvs_coefficients_free(struct ia_css_dvs_coefficients *me)
 	if (me) {
 		kvfree(me->hor_coefs);
 		kvfree(me->ver_coefs);
-		memset(me, 0, sizeof(struct ia_css_dvs_coefficients));
-		kvfree(me);
+		kvfree_sensitive(me, sizeof(struct ia_css_dvs_coefficients));
 	}
 }
 
@@ -4551,8 +4548,7 @@ ia_css_dvs2_statistics_free(struct ia_css_dvs2_statistics *me)
 		kvfree(me->ver_prod.odd_imag);
 		kvfree(me->ver_prod.even_real);
 		kvfree(me->ver_prod.even_imag);
-		memset(me, 0, sizeof(struct ia_css_dvs2_statistics));
-		kvfree(me);
+		kvfree_sensitive(me, sizeof(struct ia_css_dvs2_statistics));
 	}
 }
 
@@ -4635,8 +4631,7 @@ ia_css_dvs2_coefficients_free(struct ia_css_dvs2_coefficients *me)
 		kvfree(me->ver_coefs.odd_imag);
 		kvfree(me->ver_coefs.even_real);
 		kvfree(me->ver_coefs.even_imag);
-		memset(me, 0, sizeof(struct ia_css_dvs2_coefficients));
-		kvfree(me);
+		kvfree_sensitive(me, sizeof(struct ia_css_dvs2_coefficients));
 	}
 }
 
@@ -4710,8 +4705,8 @@ ia_css_dvs2_6axis_config_free(struct ia_css_dvs_6axis_config *dvs_6axis_config)
 		kvfree(dvs_6axis_config->ycoords_y);
 		kvfree(dvs_6axis_config->xcoords_uv);
 		kvfree(dvs_6axis_config->ycoords_uv);
-		memset(dvs_6axis_config, 0, sizeof(struct ia_css_dvs_6axis_config));
-		kvfree(dvs_6axis_config);
+		kvfree_sensitive(dvs_6axis_config,
+				 sizeof(struct ia_css_dvs_6axis_config));
 	}
 }
 
-- 
2.28.0